package cn.itcast.bos.web.action;

import java.util.ArrayList;
import java.util.List;

import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;

import org.apache.commons.lang3.StringUtils;
import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.Namespace;
import org.apache.struts2.convention.annotation.ParentPackage;
import org.apache.struts2.convention.annotation.Result;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.domain.Specification;
import org.springframework.stereotype.Controller;

import com.opensymphony.xwork2.ActionContext;

import cn.itcast.bos.common.entity.EasyUIDatagridResult;
import cn.itcast.bos.domain.base.FixedArea;
import cn.itcast.bos.service.FixedAreaService;

/**
 * 定区模块
 * 
 * @author Beck
 *
 */
@ParentPackage(value = "json-default")
@Namespace("/")
@Controller
@Scope("prototype")
public class FixedAreaAction extends BaseAction<FixedArea> {
	@Autowired
	private FixedAreaService fixedAreaService;

	@Action(value = "fixedAreaAction_page", results = { @Result(name = "success", type = "json") })
	public String pageQuery() throws Exception {
		Pageable pageable = new PageRequest(page-1, rows);

		// 查询条件
		Specification<FixedArea> spec = new Specification<FixedArea>() {

			@Override
			public Predicate toPredicate(Root<FixedArea> root, CriteriaQuery<?> query, CriteriaBuilder cb) {
				List<Predicate> list = new ArrayList<>();
				// 定区编号
				if (StringUtils.isNotBlank(model.getId())) {
					Predicate p = cb.equal(root.get("id").as(String.class), model.getId());
					list.add(p);
				}

				// 所属单位
				if (StringUtils.isNotBlank(model.getCompany())) {
					Predicate p = cb.like(root.get("company").as(String.class), "%" + model.getCompany() + "%");
					list.add(p);
				}

				Predicate predicate = null;
				if (list != null && list.size() > 0) {
					Predicate[] array = new Predicate[list.size()];
					predicate = cb.and(list.toArray(array));
				}

				return predicate;
			}
		};

		Page<FixedArea> fixedAreaPage = fixedAreaService.findByPage(spec, pageable);
		EasyUIDatagridResult easyUIDatagridResult = new EasyUIDatagridResult(fixedAreaPage.getTotalElements(),
				fixedAreaPage.getContent());
		ActionContext.getContext().getValueStack().push(easyUIDatagridResult);

		return SUCCESS;
	}

	/**
	 * 增加定区
	 */
	@Action(value = "fixedAreaAction_save", results = {
			@Result(name = "success", type = "redirect", location = "./pages/base/fixed_area.html") })
	public String addFixedArea() throws Exception {
		fixedAreaService.addFixedArea(model);
		return SUCCESS;
	}
}
